Estimate the equilibrium temperature of a plate in space when exposed solar flux of 1352 w/m2 (from source at 5800 k) if it has an emissivity of 0.9 upto 3 µm and 0.05 beyond

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature